* Infrared cut-off filter, designed to reflect or block mid-infrared wavelengths while passing visible light

Infrared ( IR ) light is electromagnetic radiation with longer wavelengths than those of visible light, extending from the nominal red edge of the visible spectrum at 0. 74 micrometres ( µm ) to 300 µm.

Infrared light is emitted or absorbed by molecules when they change their rotational-vibrational movements.

Infrared spectroscopy ( IR spectroscopy ) is the spectroscopy that deals with the infrared region of the electromagnetic spectrum, that is light with a longer wavelength and lower frequency than visible light.

Infrared light reveals the dense open cluster forming at the heart of the Orion nebula.

Infrared Data Association ( IrDA ) uses infrared light, which has a frequency below the human eye's sensitivity.

Infrared ( IR ) light is electromagnetic radiation with a wavelength between 0. 7 and 300 micrometers, which equates to a frequency range between approximately 1 and 430 THz.

Infrared or red radiation from a common household radiator or electric heater is an example of thermal radiation, as is the heat and light ( IR and visible EM waves ) emitted by a glowing incandescent light bulb.

Infrared and terahertz-wave cameras are capable of creating images through clothing, though these images differ from what would be created with visible light.

Infrared light is strongly absorbed by the hydrogen-oxygen or OH bonds.

* Infrared coagulator-an intense source of infrared light in a small beam like a laser.

Tungsten-halogen lamps are frequently used as a near-infrared light source in Infrared spectroscopy.

Infrared astronomy began in the 1830s, a few decades after the discovery of infrared light by William Herschel in 1800.

Infrared and optical astronomy are often practiced using the same telescopes, as the same mirrors or lenses are usually effective over a wavelength range that includes both visible and infrared light.

Infrared light is absorbed at many wavelengths by water vapor in the Earth's atmosphere, so most infrared telescopes are at high elevations in dry places, above as much of the atmosphere as possible.

Infrared radiation with wavelengths just longer than visible light, known as near-infrared, behaves in a very similar way to visible light, and can be detected using similar solid state devices.

This dependence on the polarizability differs from Infrared spectroscopy where the interaction between the molecule and light is determined by the dipole moment ; this contrasting feature allows to analyze transitions that might not be IR active via Raman spectroscopy, as exemplified by the rule of mutual exclusion in centrosymmetric molecules.

Moreover, most organic compounds absorb and emit light in the infrared ( IR ) so, for example, the recent detection of methane in the atmosphere of Mars was achieved using an IR ground-based telescope, NASA's 3-meter Infrared Telescope Facility atop Mauna Kea, Hawaii.

Image: HAWK-I Messier 100. jpg | Infrared light with the HAWK-I camera on ESO's Very Large Telescope.

Infrared light, rather than visible light is used more commonly, because optical fibers transmit infrared wavelengths with less attenuation and dispersion.

The Spitzer Science Center ( SSC ), part of the Infrared Processing and Analysis Center located on the Caltech campus, is the data analysis and community support center for NASA's Spitzer Space Telescope.

Infrared radiation in the spectral distribution of a black body is usually considered a form of heat, since it has an equivalent temperature, and is associated with an entropy change per unit of thermal energy.

Infrared radiation is absorbed by greenhouse gases, which in turn re-radiate much of the energy to the surface and lower atmosphere.

Infrared is also used to observe distant, red-shifted galaxies that were formed much earlier in the history of the universe.

Infrared in general is used, for instance, in TV remotes.

Infrared technology is low-cost and has the advantage of being allowed aboard.

The high data speeds of UMTS are now most often utilised for Internet access: experience in Japan and elsewhere has shown that user demand for video calls is not high, and telco-provided audio / video content has declined in popularity in favour of high-speed access to the World Wide Web — either directly on a handset or connected to a computer via Wi-Fi, Bluetooth, Infrared or USB.

The organisation is mission center for several key current missions ( Kepler Mission, the Lunar CRater Observation and Sensing Satellite ( LCROSS ) mission, Stratospheric Observatory for Infrared Astronomy ( SOFIA )) and a major contributor to the '" new exploration focus '" as a participant in the Orion crew exploration vehicle and Ares I crew launch vehicle projects.

Stratospheric Observatory for Infrared Astronomy ( SOFIA ) is a joint venture of the U. S. and German aerospace agencies, NASA and the DLR to make an infrared telescope platform that can fly at altitudes high enough to be in the infrared-transparent regime above the water vapor in the Earth's atmosphere.

Infrared astronomy is the branch of astronomy and astrophysics that studies astronomical objects visible in infrared ( IR ) radiation.

The Kuiper Airborne Observatory and the Stratospheric Observatory for Infrared Astronomy use airplanes to observe in the infrared, which is absorbed by water vapor in the atmosphere.

Infrared Data Association ( IrDA ) technology is a very simple form of free-space optical communications.

The Infrared Data Association ( IrDA ) is an industry driven interest group that was founded in 1993 by around 50 companies.

Infrared imaging cameras are used to detect heat loss in insulated systems, to observe changing blood flow in the skin, and to detect overheating of electrical apparatus.

Infrared LEDs are also used in the remote control units of many commercial products including televisions, DVD players, and other domestic appliances.

The two kinds of wireless technologies used for WPAN are Bluetooth and Infrared Data Association.

* Infrared interferometer spectrometer and radiometer, an instrument used in the Voyager space program

Infrared thermography color thermal imaging cameras ( used in formal energy audits ) can quickly document the negative thermal impact of roof-angled glass or a skylight on a cold winter night or hot summer day.

* Infrared spectroscopy and Raman spectroscopy are other common spectroscopic techniques, usually used to obtain information about the structure of compounds or to identify compounds.

Infrared astronomy has also been used to assess the composition of solid materials in the interstellar medium, including silicates, kerogen-like carbon-rich solids, and ices.

Most of the time is used by the UKIRT Infrared Deep Sky Survey, but some 60 + nights per year are used by Korean institutes.

Infrared film was used on mission 1104, and color film on missions 1105 and 1008.

Infrared LEDs can be used for illuminators for night vision systems.

Infrared satellite imagery can be used effectively for tropical cyclones with a visible eye pattern, using the Dvorak technique, where the difference between the temperature of the warm eye and the surrounding cold cloud tops can be used to determine its intensity ( colder cloud tops generally indicate a more intense storm ).

* When implementing the Infrared Data Association ( IrDA ) protocol, often an endec is used between the UART and the optoelectronics.

In contrast, to detect a passively guided Infrared homing missile requires MAWS detectors with significant disadvantages: radar-based closure-detecting style MAWS radiate an easily-detectable signal which both reveals the aircraft and may be used as an auxiliary homing signal by AA missiles, and Infrared launch signature detector-based MAWS tend to be subject to a high false alarm rate which reduces attention paid them by the pilot.

** Infrared homing: This form of guidance is used exclusively for military munitions, specifically air-to-air and surface-to-air missiles.

For instance, Infrared gas analyzers can be used to identify the presence of pollutants in the air, distinguishing the pollutant from nitrogen, oxygen, water and other expected constituents.

The AAOmega data will be used in conjunction with observations from satellite observatories ( e. g. Herschel Space Observatory ) and other telescopes around the world ( e. g. the European Southern Observatory's Visible and Infrared Survey Telescope, VISTA ) to critically examine the predictions of the Cold Dark Matter standard cosmological model e. g. the relationship between the number density of dark matter halos and their masses and the relationship between the number density of galaxies and their masses as determined through studying their starlight.

The top of the phone is occupied by the earpiece, antenna, SDIO / MMC slot ; in front of the slot is the Infrared port with the power button which can be used to turn off the screen, or, if held down for a few seconds can turn off the radio functions.